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Nuclear Theory·nucl-th

Monday·October 19, 2015

5 papers—2 primary·3 cross-listed

All5Primary2Cross-lists3
  1. 01

    [Submitted on 16 Oct 2015]

    Strong-interaction isospin-symmetry breaking within the density functional theory

    Pawel Baczyk🇵🇱 · Jacek Dobaczewski🇵🇱 · Maciej Konieczka🇵🇱 · Wojciech Satula🇵🇱

    The conventional Skyrme interaction is generalized by adding zero-range charge-symmetry-breaking and charge-independence-breaking terms, and the corresponding energy density functional is derived. It is shown that the extended model accounts for experimental values of mirror and triplet displacement energies (MDEs and TDEs) in sd-shell isospin triplets with, on average, about 100~keV precision using only two additional adjustable coupling constants. Moreover, the model is able to reproduce, for the first time, the A=4n versus A=4n+2 staggering of the TDEs.

    Comments:
    talk presented at the XXII Nuclear Physics Workshop, Kazimierz Dolny, Poland, September 22-27, 2015
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1510.04831 [pdf]
    Acta Phys.Polon.Supp.(2015)·5 citations
  2. 02

    [Submitted on 16 Oct 2015]

    Deuteron electrodisintegration with unitarily evolved potentials

    S. N. More🇺🇸 · S. König🇺🇸 · R. J. Furnstahl🇺🇸 · K. Hebeler🇩🇪

    Renormalization group (RG) methods used to soften Hamiltonians for nuclear many-body calculations change the effective resolution of the interaction. For nucleon knock-out processes, these RG transformations leave cross sections invariant, but initial-state wave functions, interaction currents, and final-state interactions are individually altered. This has implications for the factorization of nuclear structure and reactions. We use deuteron electrodisintegration as a controlled laboratory for studying how structure and reaction components are modified under RG evolution, without the complication of three-body forces or currents. The dependence of these changes on kinematics is explored.

    Comments:
    17 pages, 13 figures, published version
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1510.04955 [pdf]
    PRC(2015)·19 citations

Affiliations

first authorsco-authorsvia INSPIRE